SMA POWER PLANT CONTROLLER - Manual (Page 36)

7 Operation SMA Solar Technology AG
36 PPC-BE-P7-en-13 Operating Manual
Procedure:
1. Log into the user interface (see Section 11.3.1, page 54).
2. Go to PPC > Grid system services > Input signals > Measurement values.
3. To assign the record from which the active power setpoint is to be calculated, select the button [Active power]
under Measured values 1 (default) or Measured values 2 (redundant) in the right-hand menu bar.
4. If an error has occurred and the Power Plant Controller needs to supply substitution values, select the entry Yes in
the drop-down list Substitution value and enter the required substitution value.
5. To switch the device or the input supplying the measured data, select the appropriate entry in the drop-down list
Signal source.
– Modbus server: The measured values are transmitted via Modbus protocol from the grid operator to the
Power Plant Controller.
– Modbus device: The measured values are transmitted via Modbus protocol from the network analyzer to the
Power Plant Controller.
– Onboard: The cables supplying the analog measured values are connected directly to the analog inputs of the
Power Plant Controller.
– Bus coupler: The cables supplying the analog measured values are connected to a bus terminal of the
Power Plant Controller.
6. If you have selected the setting Modbus device in the drop-down list Signal source, you will now need to define
the network analyzer at which the signal is present.
7. If you have selected the setting Onboard or Bus coupler in the drop-down list Signal source, you will now need
to define the input at which the signal is present. To do this, select the corresponding entry in the drop-down list
Hardware channel.
8. If the measured data are not supplied by a network analyzer or the network analyzer does not have an averaging
function, averaging of the data can be configured here. To do this, enter the desired number of values in the field
Averaging x values. Entries are possible between 1 (no averaging) and 10 (averaging from 10 measured
values).
9. If the measured data are supplied as analog signals, adjust the scaling of the measured values:
– in the field yMin., enter the lowest value in the range of valid measured values
– in the field yMax., enter the highest value in the range of valid measured values
– in the field x0, enter the lowest signal value supplied by the transducer
– in the field x1, enter the highest signal value supplied by the transducer
– in the field y0, enter the lowest value in the measurement range
– in the field y1, enter the highest value in the measurement range
☑ When measured values are received without errors, No is displayed in the field Error.
✖ Yes is displayed in the Error field?
No measured values are being received by the Power Plant Controller or the values received are outside the
permitted range. An error is displayed and the substitution value is used.
10. To configure the settings for further measured values, repeat the settings from Step 3 for each setpoint.
11. To make settings for the measured values of the sensors, go to PPC > Grid system services > Input signals >
Measurements common.
12. Repeat settings from Step 3 for each sensor.